Trim Port Seal Kit

Restore Watertight Sealing for Lewmar Trimline Portlights

The Lewmar Trim Port Seal Kit is a genuine OEM replacement designed for Lewmar Trimline (Trim Port) hatches and portlights. It restores proper gasket compression and prevents leaks caused by ageing, cracked, or flattened seals.

Durable, Marine-Grade Sealing Material

Manufactured from high-quality, UV-resistant polymer, the replacement seal maintains elasticity and performance even under long-term exposure to saltwater, sunlight and varying temperatures. His ensures reliable watertight protection over many seasons.

Precision-Fit for Trimline Hatch & Portlights Profiles

Engineered to fit the specific geometry of Lewmar Trim Port frames, the seal seats cleanly into the groove and compress correctly when the portlight is closed. This ensures smooth operation and consistent sealing performance.

Improves Comfort & Eliminates Moisture Intrusion 

A new Trim Port seal helps stop drips, drafts, and condensation issues, protecting interior linings, cushions, and equipment from moisture damage. It also reduces rattling and wind noise, improving onboard comfort.

Available for All Trimline Sizes

The kit is produced for every size within the Trimline portlight range, making it easy to match the correct seal to your installation during maintenance, repair, or acrylic replacement. Note: the product is no longer manufactured, so availability may vary.